57919387 has 4 divisors (see below), whose sum is σ = 58102416. Its totient is φ = 57736360.

The previous prime is 57919349. The next prime is 57919399. The reversal of 57919387 is 78391975.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57919387 - 2⁷ = 57919259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57919387.

It is not an unprimeable number, because it can be changed into a prime (57919327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91039 + ... + 91672.

It is an arithmetic number, because the mean of its divisors is an integer number (14525604).

Almost surely, 2^57919387 is an apocalyptic number.

57919387 is a deficient number, since it is larger than the sum of its proper divisors (183029).

57919387 is a wasteful number, since it uses less digits than its factorization.

57919387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183028.

The product of its digits is 476280, while the sum is 49.

The square root of 57919387 is about 7610.4787628637. The cubic root of 57919387 is about 386.9082458687.

The spelling of 57919387 in words is "fifty-seven million, nine hundred nineteen thousand, three hundred eighty-seven".